Don (our CEO & Chief Geek) just made a little change, based on some
brand new information from Apple (finally!) - and he believes this
issue should be resolved, can those of you who've had the Bad Request
error please try and surf the site in Safari and see if you can make
it happen again?

It is working the upload and return to own page.
Looks like was at Smugmug the problem.

However still I hate the way how to link photos (more then one) in a post ; maybe Don can do some bravery in that direction?!
Thanks for first step. Waiting for next improvement.
Joe
http://joecan.smugmug.com/
If you are always telling the truth, you don't have to remember what you said.